package net.tngou.boot.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;



@Component
public class SpringBeansUtil implements ApplicationContextAware {
	protected static final Logger log = LoggerFactory.getLogger(SpringBeansUtil.class);
	
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(SpringBeansUtil.applicationContext == null) {
            SpringBeansUtil.applicationContext = applicationContext;
        }
      
        log.info("========ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+SpringBeansUtil.applicationContext+"========");

    }
    //获取applicationContext
    public ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    //通过name获取 Bean.
    public  Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean.
    public  <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public  <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }

}

